CAREER: Coherent Radiation Production in an Ion Channel Laser

职业：离子通道激光器中的相干辐射产生

• 批准号: 2047083
• 负责人: Michael Litos
• 金额: $ 65万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-01-15 至 2025-12-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2047083&HistoricalAwards=false
• 关键词: CAREER; Coherent; Radiation; Production; Ion

The research enabled by this CAREER award will advance the physics of X-ray laser production by studying a method that utilizes interactions between an electron beam and a plasma source. High-brightness X-ray laser light sources represent the cutting edge of scientific imaging, capable of resolving ultra-fast dynamics at the atomic scale, while also providing critical capabilities in service of technological pursuits ranging from materials science to pharmaceutical research. Large-scale X-ray laser facilities are housed at national laboratories, such as the Linear Coherent Light Source at the SLAC National Accelerator Laboratory. This project will pave the way toward a more compact and flexible X-ray laser source that would be affordable to universities and other institutions lacking the space and financial resources of a national lab. In addition, this project will work to increase African American representation in physics Ph.D. programs by providing a strong undergraduate research experience to students recruited from Historically Black Colleges and Universities in coordination with the NSF-funded Research Experience for Undergraduates summer internship program run by the University of Colorado. Finally, this project will establish a new annual summer school retreat for graduate-level plasma physics students studying in Colorado to broaden the students’ educational exposure to different sub-fields of plasma physics, provide networking opportunities, and enhance their sense of community as plasma physicists.The objective of the research is to measure and model the generation of coherent radiation from the interaction between a relativistic electron beam and a plasma via the ion channel laser (ICL) mechanism. This will be achieved through experimental work carried out at the Facility for Advanced Accelerator Experimental Tests-II (FACET-II) at the SLAC National Accelerator Laboratory. The principal investigator’s research group is a part of the FACET-II plasma accelerator research collaboration and will leverage numerous synergies with that program to carry out the work. To date, the ICL has been proposed theoretically, but not yet studied in experiment. This project will measure the gain length and brightness of radiation that can be achieved in two regimes that are experimentally accessible at FACET-II: 1) the large oscillation amplitude regime at 800 nm wavelength, which can be seeded with the aid of the FACET-II Ti:sapphire laser system, and 2) the small oscillation amplitude regime at 1 nm wavelength to understand the ICL’s capability of producing X-ray laser pulses. The ICL is accommodating to electron beams originating from plasma-based accelerators due to a relatively loose tolerance on the beam energy spread. Further, the polarization of the radiation produced by the ICL can be changed in a relatively trivial manner on a shot-by-shot basis by adjusting the initial transverse offset and angle of the electron beam as it enters the plasma source. By leveraging these unique features of the ICL, this research may lead to novel forms of compact, plasma-based X-ray laser sources for broad use in academia, national labs, and industry.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该职业生涯奖的研究将通过研究利用电子束和等离子体源之间相互作用的方法来推动X射线激光生产的物理。高亮度X射线激光光源代表了科学成像的最前沿，能够在原子量表上解决超快速动态，同时还提供了关键的能力，以服务从材料科学到药物研究的技术追求。大规模的X射线激光设施位于国家实验室，例如SLAC国家加速器实验室的线性相干光源。该项目将为更紧凑，更灵活的X射线激光源铺平道路，该X射线激光源将负担得起大学和其他缺乏国家实验室空间和财务资源的机构。此外，该项目将努力提高非裔美国人在物理博士学位上的代表性。通过为从历史悠久的黑人学院和大学招募的学生提供与NSF资助的本科生暑期实习计划协调的学生提供的强大本科研究经验，该课程。最后，该项目将建立一个新的年度暑期学校撤退，以在科罗拉多州学习的研究生水平的血浆物理学学生拓宽学生的教育敞口，以扩大血浆物理的不同子场，提供网络机会，并增强他们作为等离子体物理学的社区意识。研究的目标是通过衡量和模型的电子互动来衡量和模型的互联网，并模仿iir andiir and iir iir andiir shiron andiir ship，并建立互动的互联网。 （ICL）机制。这将通过在SLAC国家加速器实验室的高级加速器实验测试（FACET-II）的设施中进行的实验工作来实现。首席研究员的研究小组是Facet-II等离子加速器研究合作的一部分，并将利用该计划的许多协同作用来执行这项工作。迄今为止，ICL已被提出理论，但尚未在实验中进行研究。该项目将衡量可以在facet-ii可以在实验上访问的两个方案中实现的辐射的增长长度和亮度：1）在800 nm波长处的大型振荡放大器制度，可以借助facet-ii ti：sapphire laser ti：sapphire laser ti ti：sapphire laser ti and iClifififiemitife at iCimime oclififiem wertime oclififiemition nm wert nm w w nm w nm w w nm w wepime nm w w weptime。产生X射线激光脉冲。 ICL可容纳源自基于等离子体的加速器的电子束，这是因为对梁能量扩散的公差相对较宽。此外，通过在电子光束进入等离子源时调整初始横向偏移和角度，可以以相对微不足道的方式以相对微不足道的方式更改ICL产生的辐射的极化。通过利用ICL的这些独特功能，这项研究可能会导致新型的紧凑型，基于等离子体的X射线激光源，用于在学术界，国家实验室和行业中广泛使用。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子和更广泛影响的评估来通过评估来支持的。

项目成果

Temporal evolution of the light emitted by a thin, laser-ionized plasma source

• DOI: 10.1063/5.0180416
• 发表时间: 2024-01
• 期刊: Physics of Plasmas
• 影响因子: 2.2
• 作者: V. Lee;R. Ariniello;C. Doss;Kathryn Wolfinger;P. Stoltz;C. Hansel;Spencer Gessner;John Cary-John-Ca